The brachial plexus will be visualized at the level of the roots of the plexus at this level. Presence or absence of local anesthetic around the nerves will be recorded using a Sonosite Titan T-shaped ultrasound probe placed on the patient's skin. Still images of the brachial plexus and the local anesthetic will be captured for each patient. Patient identifiers will be on the images, however the images are placed on the patient's medical record.